Improvement in joints for umbrella-sticks



G. H. BRIGGS -& J. T. CLARKSON.

, JOINTS FOR UMBRELLA-STICKS. $10,172,297. Patented Jan.18,187-6.

' if'z lnesaeq: In W672 207* N. PETEB. PHUYU-LITHOGRAPHER, WA$RINQTON DC UNITED, STATES PATENT OFFICE.

GEORGE H. BRIGGS, AND J OSEPH- T. OLARKSON, OF AMESBURY, MASS.

IMPROVEMENT IN JOINTS FOR UMBRELLA-STICKS.

, Specification forming part of Letters Patent No. 172,297, datedJanuary 18, 1876; application filed September 27, 1875.

To all whom it may concern:

Be it known that we, GEORGE H. BRIGGS and JOSEPH T. CLARKSON, both ofAmesbury, in the county of Essex and Stateof Massachusetts, haveinvented certain Improvements in Umbrellas for Vehicles, and for otheruses, of which the following is a specification:

The object of our invention is to admit of the umbrella beingautomatically held at any desired angle.

The first part of our inventionconsists in the application of anadjustable metallic joint to the handle or stick of the umbrella.

The second part of our invention relates to the combination of the 1serrated end of joint, serrated end of piston,.and a sleeve or jacket,having upon its inner circumference a right and left thread, by means ofwhich the mechanism is held in the position desired; also, to thecombination of a pin and slotted groove,

by which more than half a turn of the stick is prevented.

In the accompanying drawings similar letters referto similar parts.

Figure l is a sectional view of our invention.

A A are the sockets, into which enter the stick or handle of theumbrella. B is the serrated lower end of the upper socket A; O, the pinupon which the joint turns; D, the piston, with upper end serrated,working through the cylinder at a, holding the joint firmly in placewhen pressed against the end B E, the upper end of the lower socket A,holding'the piston D in place by means of pressure applied by the sleeveor jacket F, having upon its inner circumference a right and leftthread, thus socket B with the serrated end of the piston D,substantially as and for the purpose here-.

inbct'ore set forth.

In combination with the socket A and piston D, the serrated ends E and aa, sub-' stantially as described.

3. The sleeve or jacket F, in combination with the socket ends B and Eand piston D,

substantially as and for the purpose hereinbefore set-forth.

4. The slotted groove and pin, as described, and shown in Figs. 2 and 3,in combination with the ends E and a a and sleeve F, substantially asspecified.

GEORGE H. BRIGGS. JOSEPH T. OLABKSON.

Witnesses:

W. T. GLARKSON, JONAS I. BYAM.

